The proton g9/2 isomer in theN=50 nucleus87Rb and M2 transition rates in85,87Rb

Käubler, L.; Protochristov, Ch.; Michailova, M M; Reif, J.; Andrejtscheff, W.; Funke, L.; Kostova, L. G.; Prade, H.; Schwengner, R.; Winter, G.

doi:10.1007/bf01298897

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…As noted earlier, the state at E x = 1578 keV with J π = 9/2 + is isomeric, with a half-life of 6(1) ns [50]. In the Prisma/Clara experiment, 87 Rb ions (v/c ∼ 9.7%) travel a distance of about 17 cm from the target position in 6 ns.…”

Section: Levels and Transitions In 87 Rbmentioning

confidence: 78%

“…The low-spin states of 87 Rb have been studied in β decay [45,46], in Coulomb excitation [47], in inelastic hadron scattering [48][49][50], in single-proton transfer reactions [41][42][43][44], and in a (γ, γ ) experiment [51]. The experimental study of medium-high spin yrast and near-yrast states above the previously known J π = 9/2 + isomeric state at E x = 1578 keV has, more recently, been carried out using fusion-fission and multinucleon transfer reactions.…”

Section: Levels and Transitions In 87 Rbmentioning

confidence: 99%

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Study of medium-spin states of neutron-rich 87, 89, 91Rb isotopes

et al. 2019

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Excited states of the rubidium isotopes 87,89,91 37 Rb have been studied at the INFN Legnaro National Laboratory. Measurements of the γ-ray decay of fragments produced in binary grazing reactions resulting from the interaction of a beam of 530 MeV 96 Zr ions with a 124 Sn target have been complemented by studies of the γ-ray decay of fission fragments produced in the interaction of a beam of 230 MeV 36 S ions with a thick 176 Yb target. The structure of the yrast states of 87,89,91 37 Rb has been discussed within the context of spherical shell-model and cranked Nilsson-Strutinsky calculations.

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Section: Levels and Transitions In 87 Rbmentioning

confidence: 78%

Section: Levels and Transitions In 87 Rbmentioning

confidence: 99%

Study of medium-spin states of neutron-rich 87, 89, 91Rb isotopes

et al. 2019

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Nuclear Data Sheets for A = 87

Johnson

Kulp

2015

Nuclear Data Sheets

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The evaluated experimental data are presented for 14 known nuclides of mass 87 (Ga, Ge, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru). New datasets have been added for 87 Ga, 87 Se, 87 Kr, 87 Rb, 87 Sr, 87 Nb, and 87 Tc.The observation of and new lifetime measurements for 87 As at the NSCL Coupled Cyclotron Facility and the Oak Ridge Isochronous Cyclotron at the HRIBF-ORNL Facility are included in the adopted levels for this isotope.The new evaluation also includes an isomeric level at unknown energy for 8 7 Tc, changes to the adopted levels f o r 8 7 N b b a s e d o n n e w l y p u b l i s h e d d a t a i n c l u d i n g a n e x t e n s i o n o f t h e h i g h s p i n l e v e l s a n d n e w l i f e t i m e m e a s u r e m e n t s , a n d n e w h e a v y i o n d a t a f o r 8 7 K r . N e w h i g h s p i n l e v e l s f o r 8 7 R b w e r e o b s e r v e d , i n d i c a t i n g p o s s i b l e n e u t r o n c o r e e x c i t a t i o n s . I n a d d i t i o n , t h e g r o u n d s t a t e l i f e t i m e o f 8 7 R b h a s b e e n r e v i s e d a n d a n e w lifetime measurement for an excited level in 8 7 Rb indicates a possible proton spin flip. New excitation levels have been observed for the first time in 8 7 Se. New direct and precise measurement of atomic masses of 8 7 Tc, 8 7 Mo, 8 7 Nb, 8 7 Zr, 8 7 Mo and 8 7 Tc have greatly improved the Q value landscape in this mass region. This work supersedes the previous A=87 evaluation published in 2002He09, and Q values for all isotopes were updated to incorporate the mass evaluation in 2012Wa38. General Policies and Organization of Material: see http://www.nndc.bnl.gov/nds/NDSPolicies.pdf. G e n e r a l C o m m e n t s : I n s p i t e o f s i g n i f i c a n t e x p e r i m e n t a l w o r k o n t h e i s o b a r i c n u c l e i o f t h i s m a s s c h a i n s o m e d e f i c i e n c i e s r e m a i n . T h e i d e n t i f i c a t i o n o f 8 7 R u i s o t o p e w a s d o n e v i a p r o j e c t i l e f r a g m e n t a t i o n . H o w e v e r , excited state data remain nonexistent. Fragmentation data revealed new levels in 8 7 Tc, but the connection tothe ground state has yet to be clarified and excited levels have yet to be established for 8 7 As 8 7 Ga, and 8 7 Ge.The ground state spin and parity of 87 Br was changed to reflect new in-line measurements, but is tentative and more experimental work would be useful for further clarification.Cutoff Date: Literature available up to July 27, 2015 has been consulted. A c k n o w l e d g m e n t s : T h e e v a l u a t o r s a r e g r a t e f u l t o t h eThe statistical analysis of γ -ray data and deduced level schemes is carried out through computer codes available a t N N D C , B N L w e b s i t e : w w w . n n d c . b n l . g o v . T h e d i r e c t f e e d i n g s t o e x c i t e d s t a t e s i n β -a n d ε d e c a y s h a v e g e n e r a l l y b e e n c o m p u t e d f r o m I ( γ + c e ) i n t e n s i t y b a l a n c e s a t e a c h l e v e l ; t h e a s s o c i a t e d l o g f t v a l u e s a r e calculated usi...

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Structure of As83, As85, and As
Rezynkina¹,
Dao²,
Duchêne³
et al. 2022
Phys. Rev. C
6
1
2
1
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The structure of 83 As, 85 As and 87 As have been studied in fusion-fission reaction 238 U+ 9 Be. Fission fragments were identified in mass and atomic number using the VAMOS++ spectrometer and the coincident γ-rays were detected in the γ-ray tracking array AGATA. New transitions in 83 As and 85 As are reported and placed in the level schemes. A level scheme of the excited states in 87 As is proposed for the first time. The data are interpreted in frame of Large-Scale Shell-Model calculations, SU3 symmetries and Beyond Mean-Field frameworks. A spherical regime at magic number N =50 is predicted and the location of the proton g 9/2 orbital is proposed for the first time. Development of collectivity in a prolate deformed, γ-soft regime in the open shell cases 85 As and 87 As, most neutron-rich isotopes beyond N =50, is concluded. Data and theoretical calculations give confidence to a relatively high extrapolated excitation energy about 4 MeV of the 9/2 + state in 79 Cu, one proton above 78 Ni.

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The proton g9/2 isomer in theN=50 nucleus87Rb and M2 transition rates in85,87Rb

Abstract: Abstract. Low-lying states of the N = 50 nucleus 87Rb the shell model and the particle-core coupling model.

Cited by 6 publications

References 16 publications

Study of medium-spin states of neutron-rich 87, 89, 91Rb isotopes

Study of medium-spin states of neutron-rich 87, 89, 91Rb isotopes

Nuclear Data Sheets for A = 87

Structure of As83, As85, and As
Rezynkina¹,
Dao²,
Duchêne³
et al. 2022
Phys. Rev. C
6
1
2
1
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The proton g9/2 isomer in theN=50 nucleus87Rb and M2 transition rates in85,87Rb

Abstract: Abstract. Low-lying states of the N = 50 nucleus 87Rb the shell model and the particle-core coupling model.

Cited by 6 publications

References 16 publications

Study of medium-spin states of neutron-rich 87, 89, 91Rb isotopes

Study of medium-spin states of neutron-rich 87, 89, 91Rb isotopes

Nuclear Data Sheets for A = 87

Structure of As83, As85, and AsRezynkina1, Dao2, Duchêne3 et al. 2022Phys. Rev. C6121View full textAdd to dashboardCite

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Structure of As83, As85, and As
Rezynkina¹,
Dao²,
Duchêne³
et al. 2022
Phys. Rev. C
6
1
2
1
View full text Add to dashboard Cite